Improvement in wire-coiling machines



2 Sheets-Sheet 1.

(LE. GREEN.

, WirG-Coiling Machins. No. 204,030. PateTtd May 21,1878.

unuijuuuum 2 Sheets-Sheet 2.

0.. E. GREEN.

Wire-Goilin No. 204,030.

atented Ma Machine.

U I D' ZEATENT OFFICE.

CIIABLESEGREEN, F NEWAEK, NEW JERSEY;

' "IMPROVE ME-NT I NWIF COI'LING"MACHINES Specification forming part of Letters Patent No. 204,030, dated M'ay 21,1878 application filed April 17, 1878.

T0 all whom it may concem:

Be it known that I, CHARLES E. GREEN, of the city of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Machines for Bending Wire into Spiral Coils; and I do hereby declare that the following is a full, clear, and exact description thereoi, which Will enable others skilled in the art to WhOh it appertains to make and use the same, reference being had to the accompanying draw- .ings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to machines for forming spiral springs varying in pitch and diameter, and consisting of carrying-rolls, gageroll,-carried by a vibrating frame, guides, and operating appliances, constructed and arranged as described hereinafter, to effect the desired result.

In the drawing, Figure 1 shows a side view of my machine for coiling springs; Fig. 2, a front view of the same; Fig. 2*, a perspective diagram, illustrating the position of the rollers; and Fig. 3, a plan, drawn on a Iarger scale.

A is the bed of the machine, provided with two heads, B B, and a support, B, for the driving-pulley bearing. G 0 are the drawingroll shafts,flthe lower of which is supplied with a drivingypulley,"D, and a gear, E, for driv- Jng the other shaft by gear E.

The shafts 0 0 revolve in the heads B, and carry the wire continuously into the machine by the carrying-rolls U C.

The wire is bentfito the required curve by gage-roll F, which is carried on a rocking frame, G, pivoted to the front of the head B nearest the rolls C. Said frame G, as will be observed, can be, when necessary, adjusted laterally from head Bby means of set-screw 6 and the screw J and pivot H, Which serves to automaticafly vary the pitch of the required spiral; or the roll F may be otherwise so adjusted as to produce the same result, as Wi]l be obvious.

RollF is secured to a slide, G, which is constructed to move upon frame G, so that the roll F can be varied in its distance from the rolls C. H is the pivot of frame G, seured to the head B near its lower edge. 1 is a curved slot in the upper edge of frame G, through which a screw, J, passes into head B,

thus guiding the frame when rocked upon pivot H by connections to a cam, K, which is secured t0 a worm-wheel, L, by the side of the lower shaft C, midway between the heads B.

A stud, M, supports the cam and wheel L, the wheel being in contact with a worm or screw, N, with which shaft 0 is provided. A similar stud, M, near the front head B, supports a lever, 0, one end of which carries an adjustable roller, P, in contact with the cam K, and the other end a screw, bearing against the side of frame G near' slot I. By means of lever 0 the cam can be made to impart any desired motion to the frame G, thereoy moving roll F gradually toward the drawing-rolls 0, or permitting the roll t0 recede by the action of a spring, Q, which secured to the front of head B, and keeps frame G forcibly pressed against the lever O. Studs M and M are each secured to the bed A by a slotted foot, R, so that they may be adjusted to any desired position. Sis a carrier for roll B, and is clamped to one end of lever 0 by a setscrew, T, so that it may be set in any required position. U U are slotted or forked guides for leading the wire to therolls C 0, the roll F merely controlling the curve which the wire shall possess after passing through the rolls C.

The rolls are made each with a groove to guide the wire as it passes through them, and the 'leading guide, U, being set a little nearer to headB than the groove in rolls 0, the wire is bant a little sideWise in its passage to the rolls, and the pitch of the coiled spring is thereby determined. The guide U receives the yvire after it isbent by the rolls, and aids still further in formj'ng the proper pitch or distance between the oils. Both guides are carried on studs V, which are secured in head B by set-screws W, and are thus adjustable to any extent required.

The slide G is furnished with an adjustingscrew, X, and the end of lever 0 in contact with the side of frame G is provided with an adjusting-screw, Y.

The eam K, being secured to the worm-Wheel L, has a'slow rotary motion imparted to it by the worm on shaft G.

From the construction described, it is obvi ous that any desired rocking motion can be imparted to frame G and the roll F thereon.

The cana is shown in Fig. 3 with six teeth,

eachpf Whih wouid graduafly axlvne and Withdraw the gage-roll from rollS C,- nd pr-,

duce a spring shaped like an hour-glass, the

form usually employed in upholstering. By disconnecting the cana from the wheel L and substitucing one of another shape, any other form of spring could be as readily produced.

By securing the frame G rigidly t0 head B, springs of uniform diameter and pitch can be produced.

Having thus described my invention, what I daim as new, and desire to secure by Letters Patnb, is-- 1. The combination, with the pivoted frame 

